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A facile approach to synthesize single-crystalline rutile TiO2 one-dimensional nanostructures

机译：一种合成单晶金红石型TiO2一维纳米结构的简便方法

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摘要

TiO2 one-dimensional (1D) nanostructures such as nanowires and nanoribbons were synthesized by direct heating of Ni-coated TiO powders in argon at 850-920 degrees C and similar to 760 Torr in a tube furnace. The nanostructures were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive x-ray spectroscopy and Raman spectroscopy. The 1D nanostructures were found to be single-crystalline rutile TiO2. The preferred growth direction is along the [ 110] direction. The nanowires are roughly similar to 10-50 nm in diameter, and 5-20 mu m in length. The nanoribbons are 0.4-2 mu m in width and 5-20 mu m in length. The growth of nanostructures under different conditions of substrate, catalytic material, reaction gas environment and chemical composition of solid TixOy precursor was studied. The possible growth mechanisms are discussed.
机译：TiO2一维（1D）纳米结构（例如纳米线和纳米带）是通过在氩气中于850-920摄氏度（类似于760托）在管式炉中直接加热镀镍的TiO粉而合成的。通过扫描电子显微镜，透射电子显微镜，能量色散X射线光谱和拉曼光谱表征纳米结构。发现一维纳米结构是单晶金红石型TiO2。优选的生长方向是沿[110]方向。纳米线的直径大致类似于10-50 nm，长度约为5-20μm。纳米带的宽度为0.4-2μm，长度为5-20μm。研究了底物，催化材料，反应气体环境和固体TixOy前驱体化学成分在不同条件下的纳米结构生长。讨论了可能的增长机制。

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